TY - JOUR AU - Matthew Foreman AU - Benjamin Weiss TI - An anti-classification theorem for ergodic measure preserving transformations JO - Journal of the European Mathematical Society PY - 2004 SP - 277 EP - 292 VL - 6 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4171/jems/10/ DO - 10.4171/jems/10 ID - JEMS_2004_6_3_a0 ER -